![](http://www.ecns.cn/hd/2020/06/28/237ac1188f2041bebabbaeccf63cedb2.jpg)
Drones with LED lights create a figure depicting a heart-shaped smiley as a tribute to people who have died of the coronavirus disease (COVID-19), during a show in Madrid, Spain, June 26, 2020. (Photo/Agencies)
![](http://www.ecns.cn/hd/2020/06/28/42ea668075044cfc83b4e631a92e290e.jpg)
Drones with LED lights create a figure depicting the Red Cross as a tribute to people who have died of the coronavirus disease (COVID-19), during a show in Madrid, Spain, June 26, 2020. (Photo/Agencies)
![](http://www.ecns.cn/hd/2020/06/28/fc1e7c3e0bae4130bae2632c4493ff07.jpg)
Drones with LED lights create a word reading "hope" as a tribute to people who have died of the coronavirus disease, during a show in Madrid, Spain, June 26, 2020.(Photo/Agencies)